this is pretty much plugging things into a formula, assuming you knwo how to find partial derivatives.

Note that

you want to evaluate these at (1,0)

finding is similar

do you see how to apply the formula in this case? this formula probably wasn't the most efficient way to write it

Note that , now apply the chain rule, similar to how you did in single variable calc ...(differentiate the outside function, multiply by the derivative of the inside, etc, bearing in mind the first formula i gave. note that i used alternative notation. for example, means )